[INFO] cloning repository https://github.com/Pluriscient/Rust-Katas
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Pluriscient/Rust-Katas" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPluriscient%2FRust-Katas", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPluriscient%2FRust-Katas'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 88f36812509ae3ec8a88a3571eef05787a73b139
[INFO] checking Pluriscient/Rust-Katas against try#a7a572ce3edd6d476191fbfe92c9c1986e009b34 for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPluriscient%2FRust-Katas" "/workspace/builds/worker-58/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-58/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Pluriscient/Rust-Katas on toolchain a7a572ce3edd6d476191fbfe92c9c1986e009b34
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Pluriscient/Rust-Katas
[INFO] finished tweaking git repo https://github.com/Pluriscient/Rust-Katas
[INFO] tweaked toml for git repo https://github.com/Pluriscient/Rust-Katas written to /workspace/builds/worker-58/source/Cargo.toml
[INFO] crate git repo https://github.com/Pluriscient/Rust-Katas already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded console v0.12.0
[INFO] [stderr]   Downloaded bit-vec v0.6.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ab6120b3e24d4807e020aa841253caaecde9062f0e5503216e457071e0d444af
[INFO] running `Command { std: "docker" "start" "-a" "ab6120b3e24d4807e020aa841253caaecde9062f0e5503216e457071e0d444af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ab6120b3e24d4807e020aa841253caaecde9062f0e5503216e457071e0d444af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab6120b3e24d4807e020aa841253caaecde9062f0e5503216e457071e0d444af", kill_on_drop: false }`
[INFO] [stdout] ab6120b3e24d4807e020aa841253caaecde9062f0e5503216e457071e0d444af
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9467ab02d24d7150f97df07993c2ffd2f533831c29725dd7b7e7a2b187b3cb9a
[INFO] running `Command { std: "docker" "start" "-a" "9467ab02d24d7150f97df07993c2ffd2f533831c29725dd7b7e7a2b187b3cb9a", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] Running `cargo fix --edition`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.74
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking regex-syntax v0.6.18
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking bit-vec v0.6.2
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking terminal_size v0.1.13
[INFO] [stderr]     Checking termios v0.3.2
[INFO] [stderr]     Checking regex v1.3.9
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking console v0.12.0
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking indicatif v0.15.0
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking rust_katas v0.1.0 (/tmp/fixit)
[INFO] [stderr]    Migrating src/main.rs from 2018 edition to 2021
[INFO] [stderr]        Fixed src/probs/magnet_boxes.rs (1 fix)
[INFO] [stderr]        Fixed src/probs/three_kyus/algebraic_factors.rs (1 fix)
[INFO] [stderr]        Fixed src/probs/four_kyus/morse_advanced.rs (1 fix)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 00s
[INFO] [stderr] Running `cargo check` to verify 2021
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking rust_katas v0.1.0 (/tmp/fixit)
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `MorseDecoder`
[INFO] [stdout]    --> src/probs/four_kyus/morse_advanced.rs:110:23
[INFO] [stdout]     |
[INFO] [stdout] 110 |         let decoder = MorseDecoder::new();
[INFO] [stdout]     |                       ^^^^^^^^^^^^ not found in this scope
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]     |
[INFO] [stdout] 109 |     use crate::probs::four_kyus::morse_advanced::MorseDecoder;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `MorseDecoder`
[INFO] [stdout]    --> src/probs/four_kyus/morse_advanced.rs:115:23
[INFO] [stdout]     |
[INFO] [stdout] 115 |         let decoder = MorseDecoder::new();
[INFO] [stdout]     |                       ^^^^^^^^^^^^ not found in this scope
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]     |
[INFO] [stdout] 109 |     use crate::probs::four_kyus::morse_advanced::MorseDecoder;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `MorseDecoder`
[INFO] [stdout]    --> src/probs/four_kyus/morse_advanced.rs:121:23
[INFO] [stdout]     |
[INFO] [stdout] 121 |         let decoder = MorseDecoder::new();
[INFO] [stdout]     |                       ^^^^^^^^^^^^ not found in this scope
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]     |
[INFO] [stdout] 109 |     use crate::probs::four_kyus::morse_advanced::MorseDecoder;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust_katas` due to 4 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] [stderr] error: failed to check after updating to 2021
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `cargo check --frozen --all --all-targets --message-format=json` (exit status: 101)
[INFO] running `Command { std: "docker" "inspect" "9467ab02d24d7150f97df07993c2ffd2f533831c29725dd7b7e7a2b187b3cb9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9467ab02d24d7150f97df07993c2ffd2f533831c29725dd7b7e7a2b187b3cb9a", kill_on_drop: false }`
[INFO] [stdout] 9467ab02d24d7150f97df07993c2ffd2f533831c29725dd7b7e7a2b187b3cb9a